نتایج جستجو برای: stripping of fish eggs

تعداد نتایج: 21177196  

Journal: :تحقیقات دامپزشکی 0
معصومه بحر کاظمی عباس متین فر مهدی سلطانی بهروز ابطحی ابرج پوستی

determination of the accurate time of egg stripping after ovulation has been regarded as one of the most important factors in the successful reproduction of caspian brown trout(salmo trutta caspius). to determine the best time for egg stripping after ovulation and over- ripening of the oocyte in the caspian brown trout , the eggs of fish were retained in the coelomic cavity of females at 7 ± 6°...

Journal: :تحقیقات دامپزشکی 0
محمدرضا احمدی احمدی گروه شیلات و محیط زیست، دانشکده منابع طبیعی دانشگاه تهران غلامرضا رفیعی گروه شیلات و محیط زیست، دانشکده منابع طبیعی دانشگاه تهران محمدرضا احمدی گروه بهداشت و بیماری های آبزیان دانشکده دامپزشکی دانشگاه تهران باقر مجازی امیری گروه شیلات و محیط زیست، دانشکده منابع طبیعی دانشگاه تهران امیر سعید ویلکی معاونت تکثیر و پرورش آبزیان سازمان شیلات ایران

effect of temperature on the duration of post ovulated oocyte quality maintenance in abdominal cavity of female rainbow trout, oncorhynchus mykiss, was assessed to determine suitable time of stripping. egg quality measurement was done through assessing the eying and hatching rates of eggs. regarding the best temperature range reported for salmonid brood fish in breeding season(3-10?c)the study ...

Journal: :شیلات 0
هنگامه رفعتی . کارشناسی ارشد، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، گروه شیلات، تهران، ایران علیرضا میرواقفی دانشیار دانشگاه تهران، دانشکدة منابع طبیعی، گروه شیلات،کرج، ایران مهدی سلطانی استاد دانشگاه تهران، دانشکدة دامپزشکی، گروه بهداشت و بیماری های آبزیان، تهران، ایران

the purpose of this study is determining of some immunity and blood serum parameters in brood stock and grower fish before and after of stripping to evaluate the effect of breeding physiological changes on immunity and serum indexes. in this study 15 male trout fish (oncorhynchus mykiss) including 5 in the stage of grower, 5 before stripping and 5 after stripping randomly were considered. blood...

Journal: :Diseases of aquatic organisms 1999
E Ekman H Börjeson N Johansson

Baltic salmon brood fish were investigated for the presence of Flavobacterium psychrophilum in the kidney, spleen, brain and sexual products (ovarian fluid, unfertilised eggs and milt). Samples for bacteriology were taken at capture, when the fish were ascending their native river to spawn, and after a period of captivity in indoor pools, at stripping. During captivity, abnormal wiggling behavi...

This paper reports on the first successful backcross breeding between TGGG hybrid grouper and GG in captivity. To establish a seed production technique for this new backcross grouper, eggs and larval development were observed. Three successful spawning was observed in November 2018, September 2019 and November 2019. The eggs were collected using stripping methods and the sperms were collected u...

2017
R. P. Hendrick M. L. Kent C. E. Smith R. P. Hedrick

In the present study, the effect of successive milt collection was investigated on spermatological parameters and reproduction successes of wild and cultured endangered caspian brown trout. The milt collection was done 3 times with two weeks intervals. After milt collection, amount of milt was allocated for milt quality evaluation and reminders used for fertilization. According to results, in w...

Journal: :iranian j. of fisheries science 2014
a abubakr m.h balkhi a.s bhat f.a bhat a.f shah

haemato-biochemical studies in rainbow trout infected with saprolegnia were carried out under temperate climatic conditions of kashmir valley to find out the variation in blood parameters. the trial was carried out on 405 cultured rainbow trout fish ranging in length from 47.8 to 69.8 cm and in weight from 1300 to 1920 g. the same experiment was carried out on 2,70000.00 trout fish eggs from no...

In the present study, the effect of successive milt collection was investigated on spermatological parameters and reproduction successes of wild and cultured endangered caspian brown trout. The milt collection was done 3 times with two weeks intervals. After milt collection, amount of milt was allocated for milt quality evaluation and reminders used for fertilization. According to results, in w...

Kazemi, R., Nikbakhsh Golkhaily , J., Policar, T., Samarin, A.M.,

To study the effects of post-stripping oocyte ageing at low temperatures on the viability of kutum (Rutilus kutum) oocytes, unfertilised eggs of five females were stored in ovarian fluid at temperatures of 4 and 7 degree centigrade for 24 hours post stripping (HPS). The stored ova of five female kutum were separately fertilised at 0 (i.e., control eggs fertilised prior to storage), 4, 8, 12, 16...

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